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Question
If a double stranded DNA has 35% thymine, what would be the percentage of guanine in the DNA.
If a double stranded DNA has 35% thymine, what would be the percentage of guanine in the DNA.
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Solution
The correct option is D 15%
According to Chargaff's rule,
A=T and G=C.
The percent composition of thymine according to the question is 35%.
Adenine=Thymine=35%
(%Adenine+%Thymine) + (%Cytosine+%Guanine) = 100%
(35+35) + (C+G) = 100%
(C+G)= 30%
Since C=G,
C=G=15%
According to Chargaff's rule,
A=T and G=C.
The percent composition of thymine according to the question is 35%.
Adenine=Thymine=35%
(%Adenine+%Thymine) + (%Cytosine+%Guanine) = 100%
(35+35) + (C+G) = 100%
(C+G)= 30%
Since C=G,
C=G=15%
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